Serena to team with Isner for Hopman Cup

Question

Serena Williams is set to make her return to the Hopman Cup in 2011, with the world No. 1 set to partner John Isner in the event. Also confirmed for the mixed tournament are former world No 1 Justine Henin, and 2008 Australian Open champion Novak Djokovic. More at http://blogs.bettor.com/Serena-Williams-to-head-star-studded-Hopman-Cup-field-a19892.